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Euglenophyceae: Euglenales
Mastigophora: Euglenida

 Trachelomonas playfairi
Deflandre

Trachelomonas playfairi Genus: Euglenas in a close fitting lorica; a single long flagellum extends through small opening; lorica with or without short collar; yellow to brown (How to know the protozoa, 1979). Lorica often possesses numerous spines, composed of ferric hydroxide impregnated with brown manganic compound (Kudo, 1966).
Species: Lorica smooth, broad ellipsoidal, both ends rounded, 18-24 μm long, 15-17 μm wide, collar curved, relatively long, about 4 μm high (An Illustrated Guide to Freshwater Zooplankton in Japan, 2000).

Trachelomonas playfairi Deflandre, lorica 22 μm long (excluding collar), 18 μm wide, L/W=1.2, collar 5 μm long, x 640, a water reservoir (pond) near Yamaguchi university, Yamaguchi city, Yamaguchi Pref., November 21, 2004, by Y. Tsukii
scale 31 μm scale 63 μm scale 94 μm; x 640
Trachelomonas playfairi Trachelomonas playfairi

* Trachelomonas playfairi Deflandre: Lorica broad ellipsoid, smooth, rounded at both end; collar slightly curved; 19-23 μm long, 16-18.5 μm diam. (Illustrations of The Japanese Fresh-water Algae, 1977).

Trachelomonas horrida Palmer: 40 μm long; covered with short spines (How to know the protozoa, 1979).

Trachelomonas teres: 35 μm; lorica ovoid, with distinct collar (How to know the protozoa, 1979).

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